In the next movie, Hoppy and his companions, including Windy the camp cook and Lucky, embark on a cattle drive with a young man named Artie Peters. Along the way, they meet an eccentric professor who claims to be searching for the missing link in human evolution. However, his true intentions are revealed when it's discovered that he's actually a cattle rustler, using dynamite to scatter the herd and steal some of the cattle. Hoppy and his friends from the Bar 20 eventually catch the professor and put an end to his nefarious plans.
Hopalong Rides Again
Hoppy and his companions encounter a professor who claims to be searching for the evolutionary missing link, but is actually a cattle rustler using his scientific guise to further his nefarious activities.